/Engine/Source/Runtime/Core/Public/Containers/Array.h
Inserts given elements into the array at given location.
Location at which the item was inserted.
template<typename OtherAllocator> [SizeType](API\Runtime\Core\Containers\TArray\SizeType) Insert ( const [TArray](API\Runtime\Core\Containers\TArray)< [ElementType](API\Runtime\Core\Containers\TArray\ElementType), OtherAllocator > & Items, const [SizeType](API\Runtime\Core\Containers\TArray\SizeType) InIndex )